发现类地行星有希望

最近,科学家在距地球10．5光年的“波江座”中有了新发现。他们观察到,该星座中的恒星“E波江”周围出现了分离的物质带,说明有未观察到的行星潜伏在那里,它们控制着环带,并决定着环带的形状,且在这些潜伏的行星中可能存在类地行星。     

“I just do what the boys tell me”: Exploring small group student interactions in an integrated STEM unit

Gender equity issues remain a challenge in science, technology, engineering, and mathematics (STEM) fields, where women are highly underrepresented. As integrated STEM instruction becomes increasingly popular in elementary and middle school classrooms, it is important to consider whether the small group activities that are commonplace in STEM instruction support the equitable participation of young girls. This study builds on the existing body of literature to better understand how gender is related to student participation in small group STEM activities and whether students participate differently in science and engineering activities. A single embedded case study was used to explore the experiences of four students aged 10–11 years as they participated in small group work within an integrated STEM unit in their fifth-grade classroom. Two girls and two boys worked together throughout the unit to explore science content related to electromagnetism and apply their content knowledge to an engineering design challenge. Video and audio of students' small group interactions were analyzed using an observation protocol to code their participation in each 3-min segment of STEM activity. Student- and case-level analyses were used to identify patterns of interaction based on gender and type of activity (science vs. engineering). Findings suggest that boys and girls participate in small group STEM activities in different ways, adopting distinct roles within their group. In addition, students displayed divergent patterns of interaction in science- and engineering-focused lessons, suggesting that students need additional practice and support in navigating between science and engineering in integrated STEM units.     

Diversity and Difference in the Online Environment

ABSTRACT

The online environment challenges social work educators in their approach to developing students’ cultural awareness and culturally competent skills. To develop student competencies, it is important for accredited social work programs to consider both their explicit and implicit curricula. Although research has focused on the influence of multicultural classrooms and engaging diverse students, scant literature has been focused on teaching about diversity and difference in the online environment. This article hopes to fill this gap in knowledge by providing recommendations for social work programs to consider as they look to teach diversity and difference in the online environment.     

Discourse Analysis in Integrated STEM Activities: Methods for Examining Power and Positioning in Small Group Interactions

Research in Science Education - Integrated science, technology, engineering, and mathematics (STEM) education is becoming increasingly common in K-12 classrooms, and small group activities are...